The princess bride -
Prince Humperdinck: First things first, to the death.
Westley: No. To the pain.
Prince Humperdinck: I don't think I'm quite familiar with that phrase.
Westley: I'll explain and I'll use small words so that you'll be sure to understand, you warthog faced buffoon.

"Do you know why the number two hundred is so vitally descriptive to both you and me? It's your weight and my I.Q."
Lex Luthor to Otis in Superman

Bill Sampson: Have you no human consideration?
Margo Channing: Show me a human, and I might have!
All About Eve

"What I'm looking for is someone who can contribute to what England has given to the world: culture, sophistication, genius. A little bit more than an 'ot dog, know what I mean? "
Harold Shand, The Long Good Friday

"I don't want to talk to you no more, you empty headed animal food trough wiper. I fart in your general direction. Your mother was a hamster and your father smelt of elderberries"
Monty Python and the Holy Grail

Reggie: You got a lady, Cates?
Jack: Yeah.
Reggie: You know, the generosity of women never ceases to amaze me
48 Hrs

"You know, I'd almost forgotten what your eyes looked like. Still the same. Pissholes in the snow. "
"You're a big man, but you're in bad shape. With me it's a full time job. Now behave yourself."
Get Carter

"You're going to look pretty silly with that knife sticking out of your ass."
Clint Eastwood to a bad guy standing behind him with a knife in High Plains Drifter

"You know you've got the brain of a four-year old child, and I bet he was glad to get rid of it."
"I married your mother because I wanted children. Imagine my disappointment when you arrived"
Horse Feathers

Al Pacino goes to seek out his crime spy Albert in a stolen car yard to enquire why he 'didn't get back to him' the previous night. Pacino and his fellow Sergeant barges in and all these car thieves go running in different directions and Albert stays sitting at his table after being interrupted in eating his breakfast. On the way to sitting down, Pacino with both hands pushes all the food off the table, 'you were supposed to get to me last night where the f**k have you been.

After a dialogue of putting Albert down but arranging to meet him at nightclub that night he leaves and in true Pacino style turns round and shouts to Albert 'Don't waste my motherf*****g time.'

The best was towards the end of the film when he enters his wife Justine's house to discover she has had a one night stand with 'Ralph.' Ralph whilst watching TV, was not aware Justine was married and anxious about the situation:

Justine smirks and say to Pacino 'this is my friend Ralph, aren't you angry?' Pacino replies 'Oh Im angry.... Im very angry..... Ralph. You know, you can ball my wife if she want's
you to. You can lounge around in her ex- husbands dead tech, post modernistic bulls**t house if she want's you to. But you do not watch my f***ing television set.'

Also after the bank robbery, De Niro takes Val Kilmer to a hospital and asks the Doctor to take off his shirt. The Doctor says 'but my daughter gave this shirt for fathers day.' De Niro says 'I don't give a sh** who gave it to you, take it off.'

Al Pacino goes to seek out his crime spy Albert in a stolen car yard to enquire why he 'didn't get back to him' the previous night. Pacino and his fellow Sergeant barges in and all these car thieves go running in different directions and Albert stays sitting at his table after being interrupted in eating his breakfast. On the way to sitting down, Pacino with both hands pushes all the food off the table, 'you were supposed to get to me last night where the f**k have you been.

After a dialogue of putting Albert down but arranging to meet him at nightclub that night he leaves and in true Pacino style turns round and shouts to Albert 'Don't waste my motherf*****g time.'

The best was towards the end of the film when he enters his wife Justine's house to discover she has had a one night stand with 'Ralph.' Ralph whilst watching TV, was not aware Justine was married and anxious about the situation:

Justine smirks and say to Pacino 'this is my friend Ralph, aren't you angry?' Pacino replies 'Oh Im angry.... Im very angry..... Ralph. You know, you can ball my wife if she want's
you to. You can lounge around in her ex- husbands dead tech, post modernistic bulls**t house if she want's you to. But you do not watch my f***ing television set.'

Also after the bank robbery, De Niro takes Val Kilmer to a hospital and asks the Doctor to take off his shirt. The Doctor says 'but my daughter gave this shirt for fathers day.' De Niro says 'I don't give a sh** who gave it to you, take it off.'

My favorite line from Heat is when De Niro makes a phone call to the banker, having just been ripped off and almost killed by his cronies at the drive-in...

De Niro 'OK, you know what? Forget the money'

Banker 'Forget the money? It's a lot of money, what are you doing?'

De Niro ' What am I doing? I'm talking to an empty telephone'

Banker 'I don't understand'

De Niro ' Because there is a dead man on the end of this f***ing line!'